Guadalajara, Mexico to Helsinki is an approximately 20.5- hour flight. You can also do a combination of flight and ferry; or do a combination of bus and flight. Traveling from Guadalajara to Helsinki, you'll lose 8 hours due to the time zone difference. Traveling from Guadalajara in November, you will find days in Helsinki are cooler (5°C), and nights are little chillier (0°C). On the 24th (Tue), you'll have the morning to explore before heading back home.